CVE-2026-115968

WordPress Ultimate Member plugin <= 2.13.1 - PHP Object Injection vulnerability

Published Oct 28, 2026 CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
Description
Deserialization of Untrusted Data vulnerability in Ultimate Member Ultimate Member ultimate-member allows Object Injection.This issue affects Ultimate Member: from n/a through 2.13.1.

Remediation

Vendor Solution

Update the WordPress Ultimate Member plugin to the latest available version (at least 2.14.0).

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Ultimatemember
Ultimatemember ultimate Member
Wordpress-extensions
Wordpress-extensions ultimate Member
Vendors & Products Ultimatemember
Ultimatemember ultimate Member
Wordpress-extensions
Wordpress-extensions ultimate Member
Type Values Removed Values Added
Description Deserialization of Untrusted Data vulnerability in Ultimate Member Ultimate Member ultimate-member allows Object Injection.This issue affects Ultimate Member: from n/a through 2.13.1.
Title WordPress Ultimate Member plugin <= 2.13.1 - PHP Object Injection vulnerability
Weaknesses CWE-502
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Patchstack
Published
Updated
Oct 28, 2026, 4:07 PM
Reserved
Oct 24, 2026, 12:18 AM
Status
Deferred
Published
Oct 28, 2026, 2:16 PM
Modified
Oct 28, 2026, 4:17 PM